| 1 | // RUN: %clang_dfsan %s -o %t && %run %t |
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| 2 | // |
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| 3 | // Tests that labels are propagated through function calls. |
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| 4 | |
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| 5 | #include <sanitizer/dfsan_interface.h> |
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| 6 | #include <assert.h> |
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| 7 | |
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| 8 | int f(int x) { |
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| 9 | int j = 2; |
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| 10 | dfsan_label j_label = 2; |
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| 11 | dfsan_set_label(label: j_label, addr: &j, size: sizeof(j)); |
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| 12 | return x + j; |
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| 13 | } |
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| 14 | |
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| 15 | int main(void) { |
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| 16 | int i = 1; |
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| 17 | dfsan_label i_label = 4; |
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| 18 | dfsan_set_label(label: i_label, addr: &i, size: sizeof(i)); |
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| 19 | |
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| 20 | dfsan_label ij_label = dfsan_get_label(data: f(x: i)); |
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| 21 | assert(dfsan_has_label(ij_label, i_label)); |
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| 22 | |
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| 23 | /* Must be consistent with the one in f(). */ |
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| 24 | dfsan_label j_label = 2; |
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| 25 | assert(dfsan_has_label(ij_label, 2)); |
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| 26 | |
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| 27 | return 0; |
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| 28 | } |
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| 29 | |
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